Handheld tool device

ABSTRACT

A handheld tool device having at least one first gear housing, having at least one second gear housing, and having a bracket holder unit provided for connecting the two gear housings. It is provided that in the assembled state the bracket holder unit is situated at least in an area of contact of the gear housings in an opening of at least one of the gear housings.

RELATED APPLICATION INFORMATION

The present application claims priority to and the benefit of Germanpatent application no. 10 2014 225 903.7, which was filed in Germany onDec. 15, 2014, the disclosure of which is incorporated herein byreference.

FIELD OF THE INVENTION

The present invention relates to a handheld device.

BACKGROUND INFORMATION

Handheld machine tools are known that have at least two gear housings,the housings being connected to one another by a screw connection, alocking connection, or a bracket holder unit.

SUMMARY OF THE INVENTION

The present invention is based on a handheld tool device having at leastone first gear housing, having at least one second gear housing, andhaving a bracket holder unit that is provided for the detachableconnection of the two gear housings.

It is proposed that, in the assembled state, the bracket holder unit issituated at least in a contact region of the gear housing, in an openingof at least one of the gear housings.

In the present context, a “handheld tool device” is to be understood inparticular as at least a part, in particular a sub-assembly, of ahandheld machine tool. In particular, the handheld tool device can alsoinclude the overall handheld machine tool. The handheld machine tool canin particular be fashioned as an arbitrary handheld machine toolconsidered useful by someone skilled in the art, which may be anelectric handheld machine tool, such as a drilling machine, a drillingand/or impact hammer, a battery-operated drill, a battery-operatedscrewdriver, and/or a battery-operated drill/screwdriver.

In particular, the handheld tool device includes a gear housing unitthat is provided in particular to accommodate and/or enclose, in anassembled state, at least one, advantageously exactly one, gear unit atleast partially, advantageously at least in large part, and particularlycompletely. Here, the gear housing unit has in particular at least twogear housings, advantageously the first gear housing and the second gearhousing, and is particularly formed by the first gear housing and thesecond gear housing. An outer contour of the gear housing unit and/or ofthe gear housing is advantageously fashioned at least substantiallycylindrically, in particular in a circular cylindrical shape. Theexpression “at least in large part” is intended to be understood ascovering in particular at least 51%, advantageously at least 60%, whichmay be at least 70%, and particularly at least 85%. An “at leastsubstantially cylindrical” object is to be understood in particular asan object that deviates from a cylindrical object with a volume portionof a maximum of 30%, advantageously a maximum of 20%, and particularly amaximum of 10%. “Provided” is to be understood in particular asspecifically designed and/or equipped. The statement that an object isprovided for a particular function is to be understood in particular asmeaning that this object fulfills and/or carries out this particularfunction in at least one state of use and/or operational state.

In addition, a “bracket holder unit” is to be understood in particularas a holding unit, which may be at least partly elastic, that has atleast one holding element, in particular bracket-shaped, and is providedin particular to connect the first gear housing and the second gearhousing to one another with a nonpositive fit and/or with a positivefit, and which may be detachably. The at least one holding element canhave an arbitrary shape and/or contour considered useful by a personskilled in the art. Advantageously, the at least one holding element, inparticular regarded in a side view, but at least substantially, isC-shaped, V-shaped, and/or U-shaped, and in particular has at least two,advantageously exactly two, bending edges, and in particular has atleast two holding arms, and advantageously has at least one connectingweb. Advantageously, the at least two holding arms and the at least oneconnecting web enclose an angle, in particular an acute angle, of atleast 60° and a maximum of 90°, which may be less than 90°.Particularly, the bracket holder unit, in particular the at least oneholding element, may be fashioned as a transport securing device. Inthis connection, a “partially elastic object” is to be understood inparticular as an object, in particular a resetting object, that has atleast a partial area that, in a normal operating state, can beelastically modified in its position by at least 0.1 mm, which may be byat least 0.5 mm, in particular may be by at least 1 mm, and thatproduces in particular a counter-force that is a function of a change ofthe position and may be proportional to the change, and which inparticular counteracts the change. In particular, the elastic object isrepeatedly deformable, in particular at least ten times and inparticular without being damaged, and in particular automatically seeksto return to a basic shape after a deformation. In addition, a“detachable connection” between two objects is to be understood inparticular as a connection that can be produced and/or separatedreversibly without damage, in particular arbitrarily many times, whichmay be while avoiding damage to the objects. In addition, a “transportsecuring device” is to be understood in particular as a unit that isprovided to connect the gear housings securely to one another at leastduring a transport, and that is advantageously provided to absorb, atleast in large part, forces that occur during the transport.Advantageously, during operation axial forces occurring inside the gearhousing, in particular coupling forces, are absorbed at least in largepart, and which may be completely, by components differing from thebracket holder unit. In particular, the bracket holder unit is used atleast substantially exclusively for securing the connection of the twogear housings during the transport. The bracket unit and/or the at leastone holding element can in addition be made at least partly, which maybe at least in large part, and particularly completely, of an arbitrarymaterial considered useful by a person skilled in the art, such asplastic, rubber, and/or advantageously steel, in particular hardenedsteel, high-grade steel, and/or particularly spring steel.

In addition, an “opening” is to be understood in particular as a recessand/or material opening that in particular is situated on an outer sideof the at least one gear housing, which may be in an edge area of the atleast one gear housing, and in particular is provided to accommodate, atleast partly, the bracket unit, in particular the at least one holdingelement.

Advantageously, the opening extends up to an outermost, in particularradial and/or axial, point of the at least one gear housing.Particularly, the first gear housing and the second gear housing mayhave an opening, in particular in the contact area of the gear housings.A “contact area of two objects is to be understood, in this context, inparticular as an area of proximity around at least one point of contactof the objects. In addition, an area of proximity” is to be understoodin particular as a spatial region that is formed from points that eachhave a distance of at most 20 mm, advantageously at most 10 mm, whichmay be at most 5 mm, and particularly at most 0.5 mm from a referencepoint and/or reference component.

In addition, the handheld tool device can have at least one handheldtool housing, at least one drive module, advantageously an electricmotor, at least one, advantageously exactly one, gear unit, and/or atleast one tool receptacle. The gear unit is advantageously fashioned asa multi-speed planetary gear, and in particular is situated, in anassembled state, at least partly, which may be at least in large part,and particularly completely inside the gear housing unit.

Through a corresponding design of the handheld tool device, inparticular efficiency can be improved, in particular constructive spaceefficiency, cost efficiency, weight efficiency, and/or time efficiency,in particular during assembly. In addition, in particular a connectionbetween the gear housings can be achieved that is neutral with respectto constructive space and is advantageously detachable, whereby inparticular maintenance, assembly, and/or exchange of components can befacilitated.

Advantageously, the bracket holder unit and/or the at least one holdingelement is situated at least partially and may be at least in large partin a radial opening in at least one of the gear housings. In thiscontext, a “radial opening” is to be understood in particular as anopening that extends in a radial direction, in particular in relation tothe gear housing unit, to at least one of the gear housings, and/or to atool axis of rotation of the handheld tool device. Particularly, the atleast two gear housings each may have a radial opening in which thebracket holder unit and/or the at least one holding element is situatedat least partially and may be at least in large part. In this way, inparticular a bracket holder unit can be provided that is neutral withrespect to constructive space.

If the bracket holder unit and/or the at least one holding element issituated at least partly, and may be at least in large part, in an axialopening of at least one of the gear housings, in particular a simpleassembly can be achieved. In the present context, an “axial opening” isto be understood in particular as an opening that extends in an axialdirection, in particular relative to the gear housing unit, to at leastone of the gear housings and/or to the tool axis of rotation of thehandheld tool device. Particularly, the at least two gear housings eachmay have an axial opening in which the bracket holder unit and/or the atleast one holding element is situated at least partially and may be atleast in large part.

In addition, it is proposed that the bracket holder unit and/or the atleast one holding element is provided to exert an axial holding force onthe at least two gear housings, and in particular, in an assembledstate, on the at least two gear housings. In this way, in particular asecure connection can be ensured between the gear housings.

An assembly and/or disassembly that is particularly efficient withrespect to time can be achieved in particular if the bracket holderunit, in particular the at least one holding element, is provided for atangential assembly and/or disassembly. In the present context, a“tangential direction” is to be understood in particular as a directionthat is oriented perpendicular to the axial direction and/or to theradial direction.

In an embodiment of the present invention, it is proposed that thebracket holder unit and/or the at least one holding element is situatedat least partly, and may be at least in large part, in a bulge region ofat least one of the gear housings. In the present context, a “bulgeregion” is to be understood in particular as a region of the gearhousing that has a specific shape, and in particular that forms a bulge.In particular, the bulge region corresponds to a region having a largerradial extension compared to a surrounding area. In particular, thebulge region, and/or the bulge, is situated on an outer side of the gearhousing, and extends at least partly, advantageously at least in largepart, and particularly completely, in particular in annular fashion,around the at least one gear housing.

Particularly, the at least two gear housings each may have a bulgeregion in which the bracket holder unit and/or the at least one holdingelement is situated at least partially and may be at least in largepart. In this way, in particular a stability of the connection can beincreased.

The bulge region, in particular the bulge, may be provided for an axialfixing of the gear housing, in particular having the bulge region, inparticular inside the handheld tool housing. In this way, in particularadditional fastening arrangements can be omitted, which can reducecosts.

In addition, a handheld tool device is proposed having at least a firstgear housing, having at least a second gear housing, and having abracket holder unit that is provided for connecting the two gearhousings, the bracket holder unit having, in particular in an assembledstate, an axial extension less than 30 mm, which may be less than 20 mm,particularly less than 10 mm.

Advantageously, the at least one holding element has a longitudinalextension and/or, in particular in an assembled state, an axialextension less than 30 mm, which may be less than 20 mm, particularlyless than 10 mm. In this way, a required constructive space canadvantageously be reduced.

In an embodiment of the present invention, it is proposed that at leastone of the gear housings has a ring gear bearing region in whose axialsegment the bracket holder unit and/or the at least one holding elementis situated, at least partially and which may be at least in large part.In particular, there exists at least one plane, advantageously aplurality of planes disposed parallel to one another, that is disposedin particular perpendicular to a longitudinal extension of the gearhousing unit and/or of the tool axis of rotation, and which inparticular contains at least one point of the ring gear bearing regionand at least one point of the bracket holding unit. An object beingsituated in an “axial segment” of another object is to be understood inparticular as meaning that the two objects are disposed so as to overlapaxially. A “ring gear bearing region” is to be understood in the presentcontext in particular as a region in which, in an assembled state, thereis situated at least one, which may be exactly one, ring gear, inparticular of the gear unit. In this way, in particular a simple andadvantageously time-efficient assembly can be achieved.

In addition, it is provided that the ring gear bearing region isprovided to accommodate a ring gear of a gear shift and/or toaccommodate a ring gear of a torque coupling. In this way, in particularan advantageously compact design can be achieved.

If at least one of the gear housings has a securing bearing region inwhose axial segment the bracket holder unit and/or the at least oneholding element is situated at least partially, and may be at least inlarge part, an assembly can be further simplified. In particular, thereexists at least one plane, advantageously a plurality of planes disposedin parallel, disposed in particular perpendicular to a longitudinalextension of the gear housing unit and/or of the tool axis of rotation,and which in particular contains at least one point of the securingbearing region and at least one point of the bracket holding unit. Inthe present context, a “securing bearing region” is to be understood inparticular as a region in which, in an assembled state, there issituated at least one securing element, advantageously a securing ringand/or a securing plate. The at least one securing element is here inparticular provided to secure and/or to fix components situated in atleast one of the gear housings, in particular in the axial direction, inparticular in a partially assembled state of the handheld tool device,whereby the gear housings can in particular be pre-assembled separately.

In addition, it is proposed that at least one of the gear housings has abearing region of a locking element for a housing-fixed locking of agear shift element, advantageously at least of the ring gear of the gearshift, the bracket holder unit and/or the at least one holding elementbeing situated at least partially, and may be at least in large part, inthe axial segment of the bearing region. In this way, in particularforces that occur during a gear shifting process can advantageously beabsorbed by the bracket holder unit, and forces acting on othercomponents of the handheld tool device can in this way be minimized.

In addition, a handheld tool device is proposed having at least onefirst gear housing, having at least one second gear housing, having abracket holder unit provided for connecting the two gear housings, andhaving a support unit that is provided to relieve stress on the bracketholder unit, in particular of the at least one holding element, byabsorbing at least a force occurring during operation inside at leastone of the gear housings, in particular the coupling force, at least inlarge part and may be completely. Advantageously, the supporting unithere has at least one supporting element that is fashioned in particularas a securing ring, as is disclosed in particular in DE 10 2011 081 661A1. The expression “to relieve stress on the bracket holder unit” is tobe understood in particular as meaning that, in the absence of thesupport unit, the bracket holder unit would absorb the occurring axialforce, in particular coupling force, in particular at least in largepart. In this way in particular forces acting on the bracket holder unitcan be reduced, whereby the bracket holder unit, in particular the atleast one holding element, can advantageously be relieved of stress. Inaddition, the bracket holder unit, in particular the at least oneholding element, can be advantageously fashioned in space-saving fashionand/or with light weight.

A particularly compact design can be achieved in particular if at leastone of the gear housings, and/or the gear housings, is/are provided toaccommodate an at least two-speed planetary gear.

In a particular embodiment of the present invention, it is proposed thatthe bracket holder unit has at least two holding elements fashionedseparately from one another, provided to exert an axial holding force onthe gear housing. Advantageously, the holding elements are fashionedanalogously to one another. In particular, the bracket holder unit canalso have exactly one holding element and/or at least three and/or atleast four holding elements. In this way, a stability of the connectioncan advantageously be increased, whereby a secure connection can beensured.

In particular in an assembled state, the at least two holding elementscan be configured with an angle relative to one another of at least 90°,advantageously at least 120°, and particularly at least 160°. However,advantageously in an assembled state the at least two holding elementsare configured radially opposite one another, in particular with respectto the gear housing unit, to at least one of the gear housings, and/orto the tool axis of rotation. Advantageously, here the holding elementsare situated in the same axial segment and/or at the same axial height,in particular relative to the gear housing unit, to at least one of thegear housings, and/or to the tool axis of rotation. In this way, aconstructively simple handheld tool device can be provided.

The handheld tool device according to the present invention is notintended to be limited to the above-described use and specificembodiment. In particular, the handheld tool device according to thepresent invention can have, in order to fulfill a manner of functioningdescribed herein, a number of individual elements, components, and unitsdiffering from a number named herein.

Further advantages result from the following description of the drawing.The drawing shows two exemplary embodiments of the present invention.The drawing, the description, and the claims contain numerous featuresin combination. A person skilled in the art will usefully also regardthe features individually, and combine them to form useful furthercombinations.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a handheld machine tool fashioned as a battery-operateddrill/screwdriver, having an at least partly removed handheld toolhousing, and having a handheld tool device, in a perspective view.

FIG. 2 shows a gear housing unit and a bracket holder unit of thehandheld tool device, in a perspective view.

FIG. 3 shows a sectional view along a first axial direction of the gearhousing unit.

FIG. 4 shows a sectional view along a second axial direction of the gearhousing unit.

FIG. 5 shows a sectional view along a transverse direction of the gearhousing unit.

FIG. 6 shows a holding element of the bracket holder unit in an enlargedview.

FIG. 7 shows a gear housing unit and a bracket holder unit of a furtherhandheld tool device, in a schematic top view.

FIG. 8 shows a holding element of the bracket holder unit of FIG. 7 inan enlarged representation.

FIG. 9 shows a gear housing unit and a bracket holder unit of a furtherhandheld tool device in a perspective view.

DETAILED DESCRIPTION

FIG. 1 shows a cordless handheld machine tool 44 a, fashioned as abattery-powered drill screwdriver, in a schematic view. Handheld machinetool 44 a has a handheld tool device.

The handheld tool device has a handheld tool housing 46 a. In thepresent case, handheld tool housing 46 a has been at least partlyremoved, in particular in upper region of handheld machine tool 44 a,for clarity.

The handheld tool device has a drive module 48 a. Drive module 48 a isrealized as an electric drive motor. In addition, the handheld tooldevice has a tool receptacle 50 a. Tool receptacle 50 a is fashioned inthe present case as a quick-release chuck. Tool receptacle 50 a isfashioned to hold a tool (not shown) for drilling and/or screwdriving.In addition, the handheld tool device has a gear module 52 a. Gearmodule 52 a has an input shaft (not shown). The input shaft is connectedto drive module 48 a. In addition, gear module 52 a has an output shaft54 a (cf. FIG. 3). Output shaft 54 a is connected to tool receptacle 50a.

In addition, the handheld tool device has a tool axis of rotation 56 a.Tool axis of rotation 56 a defines an axial direction of the handheldtool device. A radial direction of the handheld tool device is, in thepresent case, oriented perpendicular to tool axis of rotation 56 a.Drive module 48 a, gear module 52 a, and tool receptacle 50 a aresituated one after the other along tool axis of rotation 56 a. Drivemodule 48 a, gear module 52 a, and tool receptacle 50 a are provided toconvert electrical energy of an accumulator 58 a into a rotationalmovement of the tool. In the present case, the accumulator is fashionedas a lithium-ion accumulator. Alternatively, it is conceivable to use anickel-cadmium accumulator, and/or a power pack.

In addition, the handheld tool device has a gear shifting unit 60 a.Gear shifting unit 60 a has an operating element 62 a. Operating element62 a is made so as to be capable of sliding. Gear shifting unit 60 aalso has a connecting element 64 a. Connecting element 64 a connectsoperating element 62 a to gear module 52 a. Operating element 62 a hasat least two shift positions. Each shift position is allocated to atransmission speed. The transmission speeds define a rotational speedratio between output shaft 54 a and the input shaft.

In addition, the handheld tool device has an adjusting unit 66 a for atorque. Adjusting unit 66 a is supported and/or connected with gearmodule 52 a by springs 102 a, in particular pressure springs (cf. inparticular FIG. 4). During operation, adjusting unit 66 a and inparticular springs 102 a here bring about an axial force, in particulara coupling force, on gear module 52 a.

FIGS. 2 through 4 show a design of gear module 52 a. The handheld tooldevice has a gear housing unit 68 a (cf. FIG. 2). Gear housing unit 68 ais made up at least in large part of plastic. In the present case, gearhousing unit 68 a is made up at least in large part of nylon. A contourof gear housing unit 68 a has an at least substantially circularcylindrical shape. Gear housing unit 68 a has, in the present case, afirst gear housing 10 a and a second gear housing 12 a. First gearhousing 10 a and second gear housing 12 a form separate components.

In an assembled state, first gear housing 10 a is situated on a side ofgear module 52 a facing drive module 48 a. In an assembled state, firstgear housing 10 a is situated on a side of gear module 52 a facing awayfrom tool receptacle 50 a.

A contour of first gear housing 10 a has an at least substantiallycircular cylindrical shape. First gear housing 10 a has an at leastsubstantially hollow cylindrical shape. First gear housing 10 a has afirst opening 70 a for the input shaft. In addition, first gear housing10 a has a guide region for connecting element 64 a of gear shift unit60 a. Connecting element 64 a is supported on first gear housing 10 a.First gear housing 10 a has a first bulge region 20 a. First bulgeregion 20 a is situated on an outer side of first gear housing 10 a.

First bulge region 20 a extends completely around first gear housing 10a, in particular in the circumferential direction. First bulge region 20a is raised relative to a surrounding area. First bulge region 20 a issituated in an edge area of first gear housing 10 a. First bulge region20 a is situated on a side of first gear housing 10 a facing second gearhousing 12 a. First gear housing 10 a has in addition a first radialopening. In addition, first gear housing 10 a has a first axial opening.The first radial opening and the first axial opening form a common firstopening 16 a. First opening 16 a is situated in an area of contact offirst gear housing 10 a with second gear housing 12 a. In addition,first opening 16 a is situated in first bulge region 20 a. In addition,first gear housing 10 a has a second opening 17 a that is fashionedanalogously to first opening 16 a (cf. FIG. 3). First opening 16 a andsecond opening 17 a are situated radially opposite one another.

In an assembled state, second gear housing 12 a is situated on a side ofgear module 52 a facing away from drive module 48 a. In an assembledstate, second gear housing 12 a is situated on a side of gear module 52a facing tool receptacle 50 a. A contour of second gear housing 12 a hasan at least substantially circular cylindrical shape. Second gearhousing 12 a has an at least substantially hollow cylindrical shape.Second gear housing 12 a has a second opening 72 a for output shaft 54 a(cf. FIG. 3). In addition, second gear housing 12 a is surrounded atleast partly by adjusting unit 66 a. Second gear housing 12 a has asecond bulge region 22 a. Second bulge region 22 a is situated on anouter side of second gear housing 12 a. Second bulge region 22 a extendscompletely around second gear housing 12 a, in particular in thecircumferential direction. Second bulge region 22 a is raised relativeto a surrounding area. Second bulge region 22 a is situated in an edgearea of second gear housing 12 a. Second bulge region 22 a is situatedon a side of second gear housing 12 a facing first gear housing 10 a. Inaddition, second gear housing 12 a has a third radial opening. Inaddition, second gear housing 12 a has a third axial opening. The thirdradial opening and the third axial opening form a common third opening18 a. Third opening 18 a is situated in an area of contact of secondgear housing 12 a with first gear housing 10 a. In addition, thirdopening 18 a is situated in second bulge region 22 a. Third opening 18 ais situated axially opposite first opening 16 a, in particular in one ofthe bulge regions 20 a, 22 a. In addition, second gear housing 12 a hasa fourth opening 19 a fashioned analogously to third opening 18 a (cf.FIG. 3). Third opening 18 a and fourth opening 19 a are situatedradially opposite one another. Fourth opening 19 a is situated axiallyopposite second opening 17 a, in particular in one of the bulge regions20 a, 22 a.

Contact surfaces, bulge regions 20 a, 22 a, and openings 16 a, 17 a, 18a, and 19 a of gear housings 10 a, 12 a are fashioned at leastsubstantially analogously to one another. In an assembled state, firstgear housing 10 a is introduced concentrically into second gear housing12 a. Here, the contact surfaces and/or bulge regions 20 a, 22 a of gearhousings 10 a, 12 a act as stops, and thus limit a depth of insertion ofgear housings 10 a, 12 a into one another. In addition, stops and/orpositive-fit elements can be provided in gear housings 10 a, 12 a,preventing rotation of gear housings 10 a, 12 a relative to one another.In addition, in an assembled state bulge regions 20 a, 22 a are providedfor an axial fixing of gear housings 10 a, 12 a and/or of gear module 52a inside handheld tool housing 46 a. Here it is conceivable thathandheld tool housing 46 a has at least one projection that is providedto grasp bulge regions 20 a, 22 a. Alternatively, it is conceivable thatonly one gear housing has a bulge region and/or an opening. In addition,a gear housing unit and/or gear housing can alternatively be made up atleast partially, which may be at least in large part, and particularlycompletely of an arbitrary other material considered useful by a personskilled in the art, such as aluminum, and/or advantageously a plastic,in particular ABS.

The handheld tool device has in addition a gear unit 74 a (cf. inparticular FIG. 3). Gear unit 74 a is fashioned as a three-speedplanetary gear. Accordingly, gear unit 74 a has three planetary gearspeeds. The planetary gear speeds are configured one after the otheralong tool axis of rotation 56 a. The planetary gear speeds are coupledto one another.

A first planetary gear speed is situated on a side of gear unit 74 afacing first opening 70 a and/or drive module 48 a. The first planetarygear speed includes a first ring gear 27 a. In an assembled state, firstring gear 27 a is situated in a first ring gear bearing region 23 a offirst gear housing 10 a. A second planetary gear speed is connectedafter the first planetary gear speed. The second planetary gear speedincludes a second ring gear 28 a. Second ring gear 28 a corresponds to aring gear 28 a of a gear shift. In an assembled state, second ring gear28 a is situated in a second ring gear bearing region 24 a of first gearhousing 10 a and/or of second gear housing 12 a. Second ring gear 28 ais connected to gear shift unit 60 a by connecting element 64 a. Secondring gear 28 a is fashioned as a shift ring gear. Second ring gear 28 ais provided to set a selected gear ratio. Accordingly, second ring gear28 a corresponds to gear shift element 38 a. A third planetary gearspeed is situated on a side of gear unit 74 a facing second opening 72 aand/or tool receptacle 50 a. The third planetary gear speed is connectedafter the second planetary gear speed. The third planetary gear speedincludes a third ring gear 30 a. Third ring gear 30 a corresponds to aring gear 30 a of a torque coupling. In an assembled state, third ringgear 30 a is situated in a third ring gear bearing region 26 a of secondgear housing 12 a. Third ring gear 30 a is connected to adjusting unit66 a for the torque. Accordingly, ring gear bearing regions 24 a, 26 aare provided for accommodating ring gear 28 a of the gear shift and foraccommodating ring gear 30 a of the torque coupling.

In addition, a securing unit 76 a is situated between the secondplanetary gear speed and the third planetary gear speed. In an assembledstate, securing unit 76 a is situated in a securing bearing region 32 aof second gear housing 12 a. Securing unit 76 a has a securing ring 78a. In addition, securing unit 76 a has a securing plate 80 a (cf. inparticular FIG. 4). Securing ring 78 a and securing plate 80 a areprovided to secure, in the axial direction, components situated insecond gear housing 12 a, in particular in a partly assembled state,whereby gear housings 10 a, 12 a can in particular be separatelypre-assembled. For this purpose, securing ring 78 a is connected tosecond gear housing 12 a by a bayonet connection. In addition, securingring 78 a forms a locking element 36 a for a housing-fixed locking ofgear shift element 38 a, in particular of second ring gear 28 a. Here,gear shift element 38 a, in particular second ring gear 28 a, produces aforce that acts on the locking element. Accordingly, securing bearingregion 32 a corresponds in the present case to a bearing region 34 a oflocking element 36 a. Alternatively, however, it is also conceivablethat a securing element, in particular a securing ring, and a lockingelement are different and/or separate components. In addition, asecuring ring can be connected to a gear housing by a differentfastening method considered useful by a person skilled in the art.

In addition, the handheld tool device has a bracket unit 14 a. Bracketunit 14 a is provided to connect first gear housing 10 a and second gearhousing 12 a to one another. In the present case, bracket unit 14 a isfashioned as a transport securing unit. Accordingly, bracket unit 14 asecures gear housings 10 a, 12 a at least during a transport. Inaddition, bracket holder unit 14 a is provided to produce an axialholding force on gear housings 10 a, 12 a. For this purpose, bracketunit 14 a has two holding elements 40 a, 42 a (cf. in particular alsoFIG. 5). Holding elements 40 a, 42 a are fashioned separately from oneanother. Holding elements 40 a, 42 a are fashioned analogously to oneanother. Holding elements 40 a, 42 a are made at least partiallyelastic. Holding elements 40 a, 42 a are fashioned in one piece. Holdingelements 40 a, 42 a are made of a bent plate. Holding elements 40 a, 42a are made of spring steel. Holding elements 40 a, 42 a have a materialthickness of a maximum of 1.5 mm. In the present case, holding elements40 a, 42 a have a material thickness of 0.8 mm. Holding elements 40 a,42 a have a longitudinal extension and/or an axial extension of amaximum of 30 mm. In the present case, holding elements 40 a, 42 a havea longitudinal extension and/or axial extension of 10 mm. Holdingelements 40 a, 42 a have a transverse extension of a maximum of 30 mm.In the present case, holding elements 40 a, 42 a have a transverseextension of 10 mm. Holding elements 40 a, 42 a are, regarded in a topview, at least substantially rectangular, in particular square.Alternatively, it is conceivable that holding elements are made oblong,regarded in a top view. In the present case, holding elements 40 a, 42a, regarded in a side view, are at least substantially U-shaped. Here,each holding element 40 a, 42 a has two holding arms 82 a, 84 a, and aconnecting web 86 a. In the present case, holding arms 82 a, 84 a andconnecting web 86 a enclose an angle smaller than 90°. Holding elements40 a, 42 a, and in particular holding arms 82 a, 84 a are provided inorder to exert, in an assembled state, an axial holding force on gearhousing 10 a, 12 a. For simple assembly and/or disassembly, each of theholding elements 40 a, 42 a, in particular connecting web 86 a,additionally has a through-opening 88 a.

In the present case, bracket holder unit 14 a is provided for tangentialassembly and disassembly. For assembly and/or disassembly, holdingelements 40 a, 42 a are pressed in a tangential direction into openings16 a, 17 a, 18 a, 19 a. In an assembled state, a first holding element40 a is situated in first opening 16 a and in third opening 18 a. In anassembled state, a second holding element 40 a is situated in secondopening 17 a and in fourth opening 19 a. Accordingly, in the assembledstate holding elements 40 a, 42 a are situated radially opposite oneanother. In the assembled state, holding elements 40 a, 42 a, and inparticular holding arms 82 a, 84 a press axially opposite walls ofopenings 16 a, 17 a, 18 a, 19 a against one another, and in this way inparticular exert the holding force on gear housings 10 a, 12 a.Alternatively, however, it is also conceivable to fasten holdingelements by an axial assembly and/or disassembly.

Accordingly, in the assembled state bracket holder unit 14 a is situatedin a contact region of gear housings 10 a, 12 a, in at least one opening16 a, 17 a, 18 a, 19 a of gear housings 10 a, 12 a, and at least partlyin at least one bulge region 20 a, 22 b. In addition, bracket unit 14 a,in particular holding elements 40 a, 42 a, is situated at least partlyin an axial segment of second ring gear bearing region 24 a, of thirdring gear bearing region 26 a, of securing bearing region 32 a, and ofbearing region 34 a of locking element 36 a. In addition, bracket unit14 a, in particular holding elements 40 a, 42 a, is situated in an axialsegment of supporting unit 98 a. In addition, bracket unit 14 a, inparticular holding elements 40 a, 42 a, is situated axially betweengearshift unit 60 a and adjusting unit 66 a.

The handheld tool device additionally includes a supporting unit 98 a.Supporting unit 98 a includes securing ring 78 a and/or locking element36 a, the bayonet connection, and a plurality of openings 100 a ofsecond gear housing 12 a. Supporting unit 98 a is provided to absorb theaxial force occurring during operation in order to relieve stress onbracket holder unit 14 a. In the present case, supporting unit 98 a isprovided to absorb an axial force of third ring gear 30 a. For thispurpose, securing ring 78 a and/or locking element 36 a is supportedimmediately on second gear housing 12 a and indirectly on first gearhousing 10 a. In this way, a material thickness of the at least oneholding element 40 a, 42 a can advantageously be kept small.Alternatively, however, it is also conceivable that a bracket holderunit of a pure transport securing unit is fashioned differently, and inparticular is also provided during operation to absorb a large part ofthe occurrent forces.

For further details relating to the realization of supporting unit 98 a,of securing ring 78 a, and/or of locking element 36 a, reference is madeto DE 10 2011 081 661 A1, whose disclosure is here explicitly referredto.

FIGS. 6 through 8 show a further exemplary embodiment of the presentinvention. The following descriptions and the drawings are limitedsubstantially to the differences between the exemplary embodiments, and,with regard to components having identical designations, in particularwith regard to components having identical reference characters,reference is fundamentally also made to the drawings and/or to thedescription of the other exemplary embodiments, in particular of FIGS. 1through 5. In order to distinguish the exemplary embodiments, the letter‘a’ has been appended to the reference characters of the exemplaryembodiment in FIGS. 1 through 5. In the exemplary embodiments of FIGS. 6through 8, the letter ‘a’ is replaced by the letters ‘b’ and ‘c.’

In FIGS. 6 and 7, a first exemplary embodiment of the present inventionis shown. The letter ‘b’ is appended to the exemplary embodiment ofFIGS. 6 and 7. The further exemplary embodiment differs from thepreceding exemplary embodiment at least substantially by a holdingelement 40 b, 42 b of a bracket unit 14 b.

In the present case, holding elements 40 b, 42 b are provided for axialassembly and/or disassembly. In addition, holding arms 82 b, 84 b ofholding elements 40 b, 42 b each have an additional locking opening 90b, 92 b. Locking openings 90 b, 92 b are provided to accept, in anassembled state, corresponding locking projections 94 b, 96 b of a firstgear housing 10 b and/or of a second gear housing 12 b.

FIG. 8 shows a further exemplary embodiment of the present invention.The letter ‘c’ is appended to the exemplary embodiment of FIG. 8. Thefurther exemplary embodiment differs from the preceding exemplaryembodiment at least substantially by a fastening direction of a holdingelement 40 c, 42 c of a bracket unit 14 c.

Holding elements 40 c, 42 c correspond to holding elements 40 b, 42 c[sic] of the preceding exemplary embodiment. However, in the presentcase holding elements 40 c, 42 c are provided for a tangential assemblyand/or disassembly.

What is claimed is:
 1. A handheld tool device, comprising: at least onefirst gear housing; at least one second gear housing; and a bracketholder unit to connect the two gear housings; wherein in the assembledstate the bracket holder unit is situated at least in an area of contactof the gear housings in an opening of at least one of the gear housings.2. The handheld tool device of claim 1, wherein the bracket holder unitis situated at least partially in a radial opening of at least one ofthe gear housings.
 3. The handheld tool device of claim 1, wherein thebracket holder unit is situated at least partially in an axial openingof at least one of the gear housings.
 4. The handheld tool device ofclaim 1, wherein the bracket holder unit is configured to provide anaxial holding force acting on the at least two gear housings.
 5. Thehandheld tool device of claim 1, wherein the bracket holder unit isconfigured for a tangential assembly and/or a tangential disassembly. 6.The handheld tool device of claim 1, wherein the bracket holder unit issituated at least partially in a bulge region of at least one of thegear housings.
 7. The handheld tool device of claim 6, wherein the bulgeregion is configured for an axial fixing of the gear housing.
 8. Thehandheld tool device of claim 1, wherein the bracket holder unit has anaxial extension less than 30 mm.
 9. The handheld tool device of claim 1,wherein at least one of the gear housings has a ring gear bearing regionin whose axial segment the bracket holder unit is at least partiallysituated.
 10. The handheld tool of claim 9, wherein the ring gearbearing region is configured for accommodating a ring gear of a gearshift and/or for accommodating a ring gear of a torque coupling.
 11. Thehandheld tool device of claim 1, wherein at least one of the gearhousings has a securing bearing region in whose axial segment thebracket holder unit is at least partially situated.
 12. The handheldtool device of claim 1, wherein at least one of the gear housings has abearing region of a locking element for a housing-fixed locking of agear shift element, the bracket holder unit being situated at leastpartially in the axial segment of the bearing region.
 13. The handheldtool device of claim 1, further comprising: a supporting unit to absorb,at least in large part, at least one axial force occurring duringoperation inside at least one of the gear housings to relieve stress onthe bracket holder unit.
 14. The handheld tool device of claim 1,wherein at least one of the gear housings is to accommodate an at leasttwo-speed planetary gear.
 15. The handheld tool device of claim 1,wherein the bracket holder unit) has at least two holding elementsfashioned separately from one another, which are provided to exert anaxial holding force on the gear housings.
 16. The handheld tool deviceof claim 15, wherein in an assembled state the at least two holdingelements are situated radially opposite one another.
 17. A handheldmachine tool, comprising: at least handheld tool device, including: atleast one first gear housing; at least one second gear housing; and abracket holder unit to connect the two gear housings; wherein in theassembled state the bracket holder unit is situated at least in an areaof contact of the gear housings in an opening of at least one of thegear housings.